/**@file
   I/O class header
   
   @par license 
   Copyright 2012 Lu, Ken. All rights reserved.

   Licensed under the Apache License, Version 2.0 (the "License");
   you may not use this file except in compliance with the License.
   You may obtain a copy of the License at

       http://www.apache.org/licenses/LICENSE-2.0

   Unless required by applicable law or agreed to in writing, software
   distributed under the License is distributed on an "AS IS" BASIS,
   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   See the License for the specific language governing permissions and
   limitations under the License.
 
   @author: Lu, Ken (bluewish.ken.lu@gmail.com)
**/

#ifndef _SYSPY_SYSTEM_IO_H_
#define _SYSPY_SYSTEM_IO_H_

#include <syspy/types.h>

namespace ken {


class u_IO {
public:
    u_IO();
    ~u_IO();

    u8_t  read8(u16_t port);
    u16_t read16(u16_t port);
    u32_t read32(u16_t port);
    void  write8(u16_t port, u8_t value);
    void  write16(u16_t port, u16_t value);
    void  write32(u16_t port, u32_t value);

private:
    class Impl;
    Impl  *pImpl_;

    DISALLOW_COPY_AND_ASSIGN(u_IO);
}; // class

} // namespace

#endif // _SYSPY_SYSTEM_IO_H_
